title: DNA packing in the filamentous viruses fd, Xf, Pf1 and Pf3.
abstract: Spectral data for filamentous viruses in the presence and absence of Ag+, together with other parameters, indicate that the DNA structures in two of the viruses, fd and Xf, are similar to each other but that these differ from two quite unusual and different DNA structures in Pf1 and Pf3.
mesh_terms: D001435:Bacteriophages / Q000032:analysis*; D003090:Coliphages / Q000032:analysis*; D004269:DNA, Bacterial / Q000032:analysis*; D004279:DNA, Viral / Q000032:analysis*; D004926:Escherichia coli / Q000032:analysis*; D007202:Indicators and Reagents; D011550:Pseudomonas aeruginosa / Q000032:analysis*; D012834:Silver; D013045:Species Specificity
chemical_list: D004269:DNA, Bacterial; D004279:DNA, Viral; D007202:Indicators and Reagents; D012834:Silver